Hydraulic compressor



y 1935- s. R. SEILLIERE 2,001,269

HYDRAULIC C OMPRES SOR Original Filed Dec. 24, 1931 3, Sheets-Sheet 1 224% pvfa y 1935. s. R. SEILLIERE 2,001,269

HYDRAULIC COMPRESSOR Original Filed Dec. 24, 1951 I5 Sheets-Sheet 2 /NVf/V TOR y 1935- i s. R. SEILLIEZRE 2,001,269

HYDRAULIC COMPRES SOR Original Fi'led Dec. 24, 195i 5 Sheets-Sheet 3Patented May 14, 1935 HYDRAULIC oo vrrnnsson Renewed October 12, her 27,1930 .9 .Claims.

the present invention relates to hydraulic gas ommiessors. In thesedevice a hithertO nleyedaliquid isdriven by the aid of a piston into achamber which contains the gas to be com- :15; pressed. When :the pistonmoves in one direction itlcompressesthe gas which is expelled. from thechamber througha checkvalve. On the return movement ofrthe piston theliquid is drawn out thereby causing a reduction of pressure in the 19'chamher iand consequently an inflow of a new gaseous mass through thesuction valve.

-.-'.'$m17a1ves ,of a compressor can only operate sahisfiaiciiQr ly ifLtheirequency,of their movement isilevr; :hence. the necessity to employpistons with 15:: lar e dimensi ns which are mov sl w yo thiereaeontit-is not possible to ope t e p stom directlybymeans of a high speedmotor and thencmpleteinstallation is thus end deu b e menndexpensive.v.i'lihe object of the present nv ntio i e v ome theabovedisadvantaesand t p ov de a hxdr n i :cQmp s rin-which he fr qu ncy f theenoyements 0f the compressor valves is indeneneeotnf the speed-9 rete oth mp. as permi s he const uct on of i h cspeedv w pressors themovements of :each valve of which may {he 5& slow as d sired and.moreover, which Permits t #use o h drau pu ps, uch as. qent zifzueekpmps, wh ch a e simple and i ht r so; menln stonf um i l J ii f l zeempres f r c eh obi c e t e p e ent {Invention comprises essentially twoidentical chambers -which are filled with the ,same predeterminedguantityofliquid which circulates from 3 Qeegena b to ;the;other underthe action of Qneerenore Pum h e u p a preferab y of the centrifugaltype or, -a t least exhibit the same :hydraulic characteristics ascentrifugal pumps.

. awhenithe pressurediminishes in one chamber the-liquid. thereinwillflowout and pass into the second chamber where it compresses a newsupply of gas. -By employing a suitablevalve the comprssedgas may becollectedina reservoir.

fijitls assumed; 'forinstance, that the quantity of the displaceab'leliquid is sufficient to occupy Z5 ,q ithej capacity of one of thechambers and if in the absence of any liquid the pressure in the 550.chamber .isatmospheric, when the liquid occupies of ;the;vo1ume ofthe.chamberthe pressure will increase .inthe latter to exceed .4 kilogramsper square centimetre.

I orderthatthe invention may be more. clearly t: nearthed, eiereeiie i.P W be wade Jig the;

1934. In France Decem- (01. zso ss accompanying drawings where variousembodiments of the invention are illustrated. In the drawings:--

Fig. 1 shows a a plan View, partly one form of the invention.

in section of Fig. 2 shows ai -elevation of this arrangement, alsopartly insection, p

Fig. '3 shows a modified constructionof the-device for opening andclosing the inlet and outlet" orifices for the liquid. Fig. 1 shows aplan view, partly in section, of a modified construction employing onlyasingle centriiuglalpump. f I ReferringfltoFigs. 1 and 2 of the drawings,A and B represent the compressor chambers which are preferably conicalin order to" force the liquidtowards thebottom thereof under thecentrifugal action of the eddy icurrentsflthereinf ,Accocklor plug HF.permits; .the' emptying of .the' chamber. This is alsoifa'cilitated bymaking the base of the chamber conical as: shown. 2 P and P iarectwo'centrifugalpumps serving to pump the liquid from thechambers B to A andA tofBIrespectivelly; and are driven directly by the motor-M throughashaft Z. X is the reservoir, in whichvthe compressed air vor gasisstored. V 1 I, a f Thetihlet .pipes from thepumps Pand P; which passinto .thechambers are covered by meanslof valves or caps'N, N"respectively, and thesuction. pipes foreachpf these" pumps are coveredvby the; valves 'or caps .O,[O respectively. Eachlof these valves" orcaps is providedwith apertures T as" shown; The yalvesare connected bypivoted levers. -E' whereby they may be simultaneously opened .orclosed. RI arejspringslwhich tend pto hold the valves N, N "inthe'cl'osedposition; and their tension may be adjustedfrom the outsidebym'eans'of thefscrews' The chambersmay-be filled with liquidthrough thefillingplugI-I. {S is asp ring-pressed suction valve fornthe air orgaswhich opens'on the slightest reduction .of pressurefinthe chamber Aor B.

This valve may, alternatively, be controlled by thepressure theinjecting pumps, and in this case the .valve is closed as'flsoon asthere is pres} sure in the pump; if there is no lpressure the valve..0pens With. this construction,'.,of course; thespring isreversedr I vI The aircoinpressed in..the chambers passes out through the lcheckcvalvef U, through a pipeline u andthrough a furthercheck valve .U intothe r'eservoir 'lnorder to prevent .'any..,li,quid from alsopassing-through pipe f.u,'bafiles Y may beprovided.v Alternatively;apartitionjmay be provided tor, pref erably thejai'r and,thefcompr'essing positions indicated in Fig. l the pump forces 'the'liquid from the chamber B to the chamber A. Due to the increase ofpressure which is caused by this liquid displacement the valve Njis'lifted and its apertures T uncovered, whereby the liquid may be forcedinto the chamber'A. Due to-the' coupling of the valve N with the valve'0 through the lever E the valve 0 closes thereturn orifice of the pumpP and closes it more, the more the pressure risesin A.

When the chamber A is full of liquid the valve N is no longer underpressure and due to the action of the spring R. this valve is closed"and at the same time the valve 0 isopened. Due to this action the pump Pis put into operation'and repumps the liquid from the chamber A to thechamber B. During-this operation the valve-N is opened-and the valveO=closed. When the chamber B is full the valve N" closes and the pump Pcomes into operation again. These operations continue in sequence. 1 s

Dueto the pumping of the liquidinto either the chamber A or B, air orothergas therein or in the container I is expelled under pressure-and isstored in the reservoir X as will bereadily understood without furtherexplanation. V v

The liquid employed maybe water which may if desired begmixed withglycerine or another product'reducing' its evaporation, ethyleneglycol,--or any other suitable liquid. Fig. 3 shows a modifiedconstruction for-the inlet and outlet orifices of the pumps; in whichthe cap valves N and O are replaced by a system of piston valves.

In the device shown in Fig.13, the lever E is omitted and the valves Nand 00f Figs. 1 and 2 are'replaced by two small int egral piston valvesN andlO. 'When the piston valve 'Nis moved under the action of theinjecting pump, it un-,

covers its apertures T; at the same time, the piston valve o is movedand covers its apertures. The piston valve 0 has a larger diameter thanthat of N in order that the pressure increasing in A may maintain ituntil the action of the spring R preponderates. In. the figure, Tdenotes apertures whichmake'it possible for the cylindrical part betweenthe piston valves N and O to 'communicate'with the chamber A.

The dotted line indicatesthe position of the arrangement formed by thepiston valves N and 0 during the extracting of the liquid.

Fig. 4 shows an alternative arrangement of the apparatus in which only asingle pump is employed. In this case the pump must be connected to eachchamber by a suction pipe and by a pressure pipe. The operation of theapparatus is then the same as in the case of two coupled pumps.

The compressor constituting the subject of the invention offers,amongstother advantages, that of allowing the use of a motor operatingat a speed of 3,000 revolutions per minute and of reducing thepulsations of the valves to a fiftieth of what they would be in ordinarycompressors. The chambers employed may be light and not very cumbersome,and the pressures being limited, the heating is very low; moreover, the

chambers may offer a large radiation surface. The apparatus does notrequire any lubrication and does not cause any movement of oil; thecompression obtained can be regulated at will and it is not possible toexceed that compression which has been predetermined.

1'. An hydraulic gas compressor comprising two compression chambers,liquid inlet and outlet -means to each of said chambers, liquid conduitsconnecting the inlet of each chamber with the outlet of the other,pumping means in said liquid conduits, operating to convey liquidthrough said conduits backand forth between said chambers and meanscontrolling said liquid inlet and outlet means, to reverse the directionof flow of liquid between the chambers when the pressure in the chamberundergoing compression reaches a predetermined value. 7

2. An hydraulic gas compressor comprising two compression chambers eachdivided by a deformable membrane into a gas compression space and aliquid container, liquid inlet and outletmeans to eachof said liquidcontainers, liquid conduits connecting the inlet of each liquidcontainer with the outlet of the other, pumping means in said liquid-"condui ts, and valve means in said-liquid reverse the direction offlow of liquid-'therebetweerr whereby the gas is compressed alternatelyinsaid' gascompression spaces. l .7 c

3. An hydraulic gas compressor comprising two compression chamberseach'divided by a deformable membrane into a gas compression space and aliquid container, liquid inlet and outlet means" to said liquidcontainers, liquid conduits affording two-way'communication between saidinlet and outlet means-pumping means in "saidliquid con duits, aquantity of liquid movable by said pumping means back-and forth" between-said liquid containers, and "valve meansin-said liquid containersoperating to reverse the direction of flow of liquid between saidcontainers, when the pressure inthe container undergoing compressionreaches a value approximating to that exerted by said pumping means. v va q 4. An hydraulic gas compressor comprising two compressor chamberseach divided by a deform able'membrane into a gascompression space and aliquid container, liquid inleta'ndbutlet means to each ofsaidliquid-containers, liquid'conduits affording two-way communicationbetween 1 said inlet and outlet-means, pumpingmeans'in said' liquidconduits, and valve means insaid liquid containers interconnected toclose said inlet on opening of said outletandto open said inlet onclosingof saidoutlet.= I

7 5. An hydraulicgas compressor comprisi'ng two gas compression chamberseach divided by.='ai deformable membrane. into a gas compression-spaceand aliquid container, liquid inlet and. outlet means to each .of saidliquid containers, liquid conduits affording two-way communicationbetween said inlet and outlet means, pumping means. in said liquidconduits arocking lever pivoted in each of saidliquid containerscarrying at its ends valve means to control: said inlet. and outletmeans andlspring loads toInormally maintain said inlets closed. j j 6.An, hydraulic gas compressor comprising two gas compression chamberseach divided by 'aj de'- Eormable membrane into a gas compression spaceand aliquid container, liquid'inlet and outlet a zm aeh. of ai liquidqqn in s ea er. trifugal pump, connections between both the comcontainers controlled by the pressures therein to" s pression andsuction sides of said centrifugal pump and each of said liquidcontainers and valve means in said liquid containers to control saidconnections, operating to reverse the direction of flow of liquid, onthe pressure in the liquid container reaching a predetermined value.

7. An hydraulic gas compressor comprising two gas compression chamberseach divided by a deformable membrane into a gas compression space and aliquid container, liquid inlet and outlet means to each of said liquidcontainers, liquid conduits affording two-way communication between saidinlet and outlet means, a pump in each of said liquid conduits, arocking lever pivoted in each of said liquid containers carrying at itsends valve means to control said inlet and outlet means individual toeach of said liquid conduits and spring loads to normally maintain eachof said inlets closed.

gas compression chambers each divided by a deformable membrane into agas compression space and a liquid container, each of said compressionchambers being provided with bafiles to prevent the gas to be compressedfrom contacting with the compressing liquid, liquid inlet and outletmeans to each of said liquid containers, liquid conduits afiordingtwo-way communication between said inlet and outlet means, pumping meansin said liquid conduits, a rocking lever pivoted in each of said liquidcontainers carrying at its ends valve means to control said inlet andoutlet means and spring loads to normally maintain said inlets closed.

9. An hydraulic gas compressor comprising two gas compression chamberseach divided by a deformable membrane into a gas compression space and aliquid container, liquid inlet and outlet means to each of said liquidcontainers, liquid conduits afiording two-way communication between saidinlet and outlet means, pumping means in said liquid conduits, a rockinglever pivoted in each of said liquid containers carrying at its ends 8.An hydraulic gas compressor comprising two valve means to control saidinlet and outlet means and spring loads serving as biases connected tosaid rocking levers atpoints adjacent to the inlet valves to normallymaintain said inlets closed.

SERGE RAYMOND SEILLIERE.

